Jeez... you don't need 1/2" .

How big are you after!!!?? I'll post some pics of a couple that work nicely after I've had my lunch.

Whoops...forgot to answer the Q...
Yes just scale it up...but you'll have trouble throwing a six foot boomerang .

Del

Ah! The problems of scaling up!

If the boomerang were simply increased in size by a linear dimensional factor of 2, say:

• The properties of air remain the same at 2⁰
• The linear dimensions of the boomerang all go up by 2¹
• The lift surface area of the boomerang goes up by 2²
• The volume, and therefore the weight, of the boomerang (assuming the same materials-of-construction) go up by a factor of 2³

This might prove interesting reading.

Ah...but you don't need to scale up the thickness too much.
So that means...mumble mumble starts doing sums on furry paw...I dunno but it works for limited scaling up....
Like I said you ain't gonna throw a 6 footer!

Here are a couple of my favourites. (the tape measure is open to 7½")

The one with the acute angle flys with a faster spin rate, the larger one scales nicely up and down a bit. (The small one is a scaled down big un with the angle changed).

The reverse face is virtually flat with just slight rounding of the edges.
The big one is 8mm thick (6 plies). The small one is6.5mm (5 plies)
You can se the contours of the plies. the tips are cold bent up a few mm.

Throwing two of the big ones together is cool as they fly round in close formation...I used to call it my Torvill and Dean shot
Del

PS. I made a nice one for a Woman I used to work with with 'Blue Meringue' sign written on it. I then had to make a mirror image one for her left handed daughter who wanted one...so I did 'Blue Meringue' in mirror image sign writing on it. Girlies miss out on playing with sort of stuff so I'm always keen to assist .
(Quick sign out...Mrs Cat is coming...)

Some of the fun is in the experimentation, it's not hyper critical.
Do you know how to throw one? They travel one heck of a distance...I don't have a very good throwing arm but I can easilly get one to go out past 75yards and back!
Just watch your shins when they come back in...
If you get it spot on it will almost hover in front of you on it's return and then slowly drop onto the ground!

Del

It stops short of you and hovers because it is scared of what you will do to it next.LOL

Many thanks for your kind suggestions. I will attempt the larger model. In reading about the physics/mechanics of the boomerang aerodynamic principals at work during flight, it leaves my head spinning

In reading about the physics/mechanics of the boomerang aerodynamic principals at work during flight.

I wouldn't worry about all that...the Aborigines never did

Del

Back in the late 50s my dad worked on the Bluestreak rocket launch site at Woomera.

He often brought things back this is a boomerang he brought back, in those days there wasn't much of a tourist industry, especially out in the middle of now where Woomera!!! So this may be reasoanbly called a 'real' aboriginal boomerang...

As I'm left handed I just could not throw it successfully but some right handed friends did very well...

Its almost 500 mm long with a curve of 200 mm its only 8 mm thick...

Good luck - John.

Dell, regarding two thrown at the same time, try them "flat on flat". one will fly left, the other will fly right. Just remember to duck when they both simultaneously hit you in the head.

By the way, I've never heard of the problem of left handed people with boomerangs. Just hold the "wrong" end, the boomerang also hasn't read the books.

You normally throw it slightly off vertical. E.g viewed from behind the thower the boomerang is held at about and angle of 1 o'clock flat to your right. A lefty throwing it flat to the right will naturally hold it at about 11 oclock, if they try to lean it to 1 oclock they may smack their head with it. If the hold it flat to the left then it's back to front I think...oooh dear I'm getting confused now... Anyhow my story is true (they always are). I could just about throw the left handed boomerang right handed by leaning over to get the 11 oclock angle.

Hi Dell,

Have you ever tried the multi-wing (more than 2) leg boomerangs?

Have thrown a three and five arm type when a friend visited. These had great stability and were more predictable in the return. The friend's five point "-rang" had a hole in the centre hub. Made it easy to catch when it returned by just putting your fingers into the hole.

The Aboriginies also made a boomerang with different length arms (that didn't return). this was used for hunting also, but because of the differnt arm length they "wobble" in flight and were more effective, but no good over water if you don't like getting wet. (No good for cats I suppose.)

My daughter is left handed and has no difficulty throwing boomerangs. Just hold it with the flat to the palm of the hand that you use to throw.

Have you learnt how to "tune" them yet? (which edge to chamfer further if they dip into the ground or fall short) I haven't yet, but the defects can find a home in the wood fire in the house each winter.

I've not played with the multileg ones. My Brother went to Oz and came back with the bug which I caught off him for a while.
I just built 'em like my Bro showed me and then tinkered a bit...He made a heavy hunting (non returner) he said it was bloody scarey as it was heavy, went really fast and a looooong way.
I like the contrast between the two in my pic. I can trow the little one at a point on the ground about 50yards away and it will just climb enough to whizz round at about head height like a sprinter, whereas the big one I throw a tad higher and it shambles around as if going for a leisurely jog.

My Bro is a bit of a nutter and will even throw 'em in the dark!
(Can't find a 'nutter' smiley)

The mirror image thing for left handers may be unnecessary then...but it worked and made a kid happy.

Del

As a kid I was told that the boomerang has a throwing edge and a holding edge...

The one I have which is 50 years old, has a different shaped edge at each end, this I assume is why you can't just turn them around for a left hander.

Reading the aussie books my dad came back with I vaguely remember that one edge (end) is designed to hit the target and kill it... The other I suppose just adds to the aerodynamics...

But this one I have definitely has and always had two different shaped ends to it.

John

Which reminds me, why is this thread called a peloton?

According to Wiki peloton refers to a group of cyclists or military display...

http://en.wikipedia.org/wiki/Peloton

As an avid cyclist I often go by the moniker, "One of the peloton". Stuck it in the wrong place here.

Thanks again for the helpful dialogue.

Hi Guess,

See this link http://boomerang360.tripod.com/img/conversion.jpg

It explain the relation between the measure on the plan and the thicknees of the working material.

I hope it will help you.

Regrards

Ernesto

Ernesto - thanks for the link but when I tried it, it did not show anything, just the Tripod.com logo.

I hope that you can read the table, if not please send to me your email address and I will send to.

Ernesto

Got it. Thanks.